摘要
研究了钻井过程中的摩擦特点,确定了用LEM—2动态润滑仪评价钻井液润滑特性的合理使用方法,发现通过调整仪器的内置常数CNST,就可使不同载荷及转速对测量结果的影响减至最小,从而使不同载荷下测得的摩阻系数Cf具有可比性.开发了一种与该仪器SHC软件系统配套使用的全中文数据处理软件——LEMSS系统,可完成对钻井液体系及一种或多种润滑剂在不同用途下的评价试验数据处理,以三种不同的图形方便直观地输出评价结果.用该仪器评价了常用钻井液体系的摩阻系数,大多数水基钻井液的Cf在0.2~0.4,但只要Cf≤0.2,就可认为其润滑性能满足工程要求.
According to the research of the special friction property in drilling, the rational
operation specification of LEM Ⅱ dynamic drilling fluid lubricity evaluation monitor (LEM) is
recommended. It is found that the influences of side weight and rotary speed of friction shaft on
measuring results can be reduced to the minimum through regulating the instrument constant
CNST in a special formula that the paper give. And in this condition, friction coefficients (c f)
under different side weight and rotary speed have the better comparability. A data processing
software system (LEMSS) matching original data acquisition software system (SHC) with
Chinese windows has been programmed. It can output three forms of test report chart,i.e.
evaluation of a type of mud, a kind of lubricant and a comparison among several lubricants. The
c f of general mud system has been measured by LEM Ⅱ. The evaluated results show that the
c f of most water base drilling fluids is 0.2~0.4. But we think that the lubricity of a type of mud
can not meet the need of drilling engineering unless its c f at the very most is 0.2.
出处
《西安石油学院学报(自然科学版)》
EI
1999年第1期22-25,共4页
Journal of Xi'an Petroleum Institute(Natural Science Edition)
关键词
钻井液
润滑性
评价
模拟
软件
润滑仪
drilling fluid, lubricity, evaluation, simulation, software, lubricating instrument